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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Copyright (c) 2016-2017 Daniel Ennis (Aikar) - MIT License<a name="line.2"></a>
<span class="sourceLineNo">003</span> *<a name="line.3"></a>
<span class="sourceLineNo">004</span> *  Permission is hereby granted, free of charge, to any person obtaining<a name="line.4"></a>
<span class="sourceLineNo">005</span> *  a copy of this software and associated documentation files (the<a name="line.5"></a>
<span class="sourceLineNo">006</span> *  "Software"), to deal in the Software without restriction, including<a name="line.6"></a>
<span class="sourceLineNo">007</span> *  without limitation the rights to use, copy, modify, merge, publish,<a name="line.7"></a>
<span class="sourceLineNo">008</span> *  distribute, sublicense, and/or sell copies of the Software, and to<a name="line.8"></a>
<span class="sourceLineNo">009</span> *  permit persons to whom the Software is furnished to do so, subject to<a name="line.9"></a>
<span class="sourceLineNo">010</span> *  the following conditions:<a name="line.10"></a>
<span class="sourceLineNo">011</span> *<a name="line.11"></a>
<span class="sourceLineNo">012</span> *  The above copyright notice and this permission notice shall be<a name="line.12"></a>
<span class="sourceLineNo">013</span> *  included in all copies or substantial portions of the Software.<a name="line.13"></a>
<span class="sourceLineNo">014</span> *<a name="line.14"></a>
<span class="sourceLineNo">015</span> *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,<a name="line.15"></a>
<span class="sourceLineNo">016</span> *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF<a name="line.16"></a>
<span class="sourceLineNo">017</span> *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND<a name="line.17"></a>
<span class="sourceLineNo">018</span> *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE<a name="line.18"></a>
<span class="sourceLineNo">019</span> *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION<a name="line.19"></a>
<span class="sourceLineNo">020</span> *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION<a name="line.20"></a>
<span class="sourceLineNo">021</span> *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.<a name="line.21"></a>
<span class="sourceLineNo">022</span> */<a name="line.22"></a>
<span class="sourceLineNo">023</span><a name="line.23"></a>
<span class="sourceLineNo">024</span>package co.aikar.taskchain;<a name="line.24"></a>
<span class="sourceLineNo">025</span><a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.util.HashMap;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import java.util.Map;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import java.util.Queue;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import java.util.concurrent.TimeUnit;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import java.util.function.BiConsumer;<a name="line.30"></a>
<span class="sourceLineNo">031</span><a name="line.31"></a>
<span class="sourceLineNo">032</span>@SuppressWarnings({"WeakerAccess", "unused"})<a name="line.32"></a>
<span class="sourceLineNo">033</span>public class TaskChainFactory {<a name="line.33"></a>
<span class="sourceLineNo">034</span>    private final GameInterface impl;<a name="line.34"></a>
<span class="sourceLineNo">035</span>    private final AsyncQueue asyncQueue;<a name="line.35"></a>
<span class="sourceLineNo">036</span>    private final Map&lt;String, Queue&lt;SharedTaskChain&gt;&gt; sharedChains = new HashMap&lt;&gt;();<a name="line.36"></a>
<span class="sourceLineNo">037</span>    volatile private BiConsumer&lt;Exception, TaskChainTasks.Task&lt;?, ?&gt;&gt; defaultErrorHandler;<a name="line.37"></a>
<span class="sourceLineNo">038</span>    volatile boolean shutdown = false;<a name="line.38"></a>
<span class="sourceLineNo">039</span><a name="line.39"></a>
<span class="sourceLineNo">040</span>    @SuppressWarnings("WeakerAccess")<a name="line.40"></a>
<span class="sourceLineNo">041</span>    public TaskChainFactory(GameInterface impl) {<a name="line.41"></a>
<span class="sourceLineNo">042</span>        this.impl = impl;<a name="line.42"></a>
<span class="sourceLineNo">043</span>        this.asyncQueue = impl.getAsyncQueue();<a name="line.43"></a>
<span class="sourceLineNo">044</span>        impl.registerShutdownHandler(this);<a name="line.44"></a>
<span class="sourceLineNo">045</span>    }<a name="line.45"></a>
<span class="sourceLineNo">046</span><a name="line.46"></a>
<span class="sourceLineNo">047</span>    GameInterface getImplementation() {<a name="line.47"></a>
<span class="sourceLineNo">048</span>        return impl;<a name="line.48"></a>
<span class="sourceLineNo">049</span>    }<a name="line.49"></a>
<span class="sourceLineNo">050</span><a name="line.50"></a>
<span class="sourceLineNo">051</span>    public Map&lt;String, Queue&lt;SharedTaskChain&gt;&gt; getSharedChains() {<a name="line.51"></a>
<span class="sourceLineNo">052</span>        return sharedChains;<a name="line.52"></a>
<span class="sourceLineNo">053</span>    }<a name="line.53"></a>
<span class="sourceLineNo">054</span><a name="line.54"></a>
<span class="sourceLineNo">055</span>    /**<a name="line.55"></a>
<span class="sourceLineNo">056</span>     * Creates a new chain.<a name="line.56"></a>
<span class="sourceLineNo">057</span>     */<a name="line.57"></a>
<span class="sourceLineNo">058</span>    public &lt;T&gt; TaskChain&lt;T&gt; newChain() {<a name="line.58"></a>
<span class="sourceLineNo">059</span>        return new TaskChain&lt;&gt;(this);<a name="line.59"></a>
<span class="sourceLineNo">060</span>    }<a name="line.60"></a>
<span class="sourceLineNo">061</span><a name="line.61"></a>
<span class="sourceLineNo">062</span>    /**<a name="line.62"></a>
<span class="sourceLineNo">063</span>     * Allows re-use of a Chain by giving it a name. This lets you keep adding Tasks to<a name="line.63"></a>
<span class="sourceLineNo">064</span>     * an already executing chain. This allows you to assure a sequence of events to only<a name="line.64"></a>
<span class="sourceLineNo">065</span>     * execute one at a time, but may be registered and executed from multiple execution points<a name="line.65"></a>
<span class="sourceLineNo">066</span>     * or threads.<a name="line.66"></a>
<span class="sourceLineNo">067</span>     *<a name="line.67"></a>
<span class="sourceLineNo">068</span>     * Task Data is not shared between chains of the same name. The only thing that is shared<a name="line.68"></a>
<span class="sourceLineNo">069</span>     * is execution order, in that 2 sequences of events can not run at the same time.<a name="line.69"></a>
<span class="sourceLineNo">070</span>     *<a name="line.70"></a>
<span class="sourceLineNo">071</span>     * If 2 chains are created at same time under same name, the first chain will execute fully before the 2nd chain will start, no matter how long<a name="line.71"></a>
<span class="sourceLineNo">072</span>     *<a name="line.72"></a>
<span class="sourceLineNo">073</span>     * @param name Name of the shared chain. Case sensitive<a name="line.73"></a>
<span class="sourceLineNo">074</span>     */<a name="line.74"></a>
<span class="sourceLineNo">075</span>    public synchronized &lt;T&gt; TaskChain&lt;T&gt; newSharedChain(String name) {<a name="line.75"></a>
<span class="sourceLineNo">076</span>        //noinspection unchecked<a name="line.76"></a>
<span class="sourceLineNo">077</span>        return new SharedTaskChain&lt;&gt;(name, this);<a name="line.77"></a>
<span class="sourceLineNo">078</span>    }<a name="line.78"></a>
<span class="sourceLineNo">079</span><a name="line.79"></a>
<span class="sourceLineNo">080</span>    /**<a name="line.80"></a>
<span class="sourceLineNo">081</span>     * Returns the default error handler that will be used by all chains created by this factory,<a name="line.81"></a>
<span class="sourceLineNo">082</span>     * if they do not suspply their own error handler.<a name="line.82"></a>
<span class="sourceLineNo">083</span>     * @return The current default error handler<a name="line.83"></a>
<span class="sourceLineNo">084</span>     */<a name="line.84"></a>
<span class="sourceLineNo">085</span>    public BiConsumer&lt;Exception, TaskChainTasks.Task&lt;?, ?&gt;&gt; getDefaultErrorHandler() {<a name="line.85"></a>
<span class="sourceLineNo">086</span>        return defaultErrorHandler;<a name="line.86"></a>
<span class="sourceLineNo">087</span>    }<a name="line.87"></a>
<span class="sourceLineNo">088</span><a name="line.88"></a>
<span class="sourceLineNo">089</span>    /**<a name="line.89"></a>
<span class="sourceLineNo">090</span>     * Sets the default error handler used for all chains created by this factory,<a name="line.90"></a>
<span class="sourceLineNo">091</span>     * if they do not supply their own error handler.<a name="line.91"></a>
<span class="sourceLineNo">092</span>     * @param errorHandler The error handler<a name="line.92"></a>
<span class="sourceLineNo">093</span>     */<a name="line.93"></a>
<span class="sourceLineNo">094</span>    public void setDefaultErrorHandler(BiConsumer&lt;Exception, TaskChainTasks.Task&lt;?, ?&gt;&gt; errorHandler) {<a name="line.94"></a>
<span class="sourceLineNo">095</span>        this.defaultErrorHandler = errorHandler;<a name="line.95"></a>
<span class="sourceLineNo">096</span>    }<a name="line.96"></a>
<span class="sourceLineNo">097</span><a name="line.97"></a>
<span class="sourceLineNo">098</span>    /**<a name="line.98"></a>
<span class="sourceLineNo">099</span>     * Shuts down the TaskChain system, forcing all tasks to run on current threads and finish.<a name="line.99"></a>
<span class="sourceLineNo">100</span>     * @param duration How long in the supplied units to wait before giving up the shutdown.<a name="line.100"></a>
<span class="sourceLineNo">101</span>     * @param units The units for how long to wait before giving up the shutdown<a name="line.101"></a>
<span class="sourceLineNo">102</span>     */<a name="line.102"></a>
<span class="sourceLineNo">103</span>    public void shutdown(int duration, TimeUnit units) {<a name="line.103"></a>
<span class="sourceLineNo">104</span>        shutdown = true;<a name="line.104"></a>
<span class="sourceLineNo">105</span>        asyncQueue.shutdown(duration, units);<a name="line.105"></a>
<span class="sourceLineNo">106</span>    }<a name="line.106"></a>
<span class="sourceLineNo">107</span>}<a name="line.107"></a>




























































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